Introduce per-tab preferences service.

chrome/test/base/testing_pref_service.cc

Index: chrome/test/base/testing_pref_service.cc
diff --git a/chrome/test/base/testing_pref_service.cc b/chrome/test/base/testing_pref_service.cc
index 962dddb4b9d778c6b0e4dca8fa39a0d5abcaa430..d5ba5c4bb073682f39473387c84b675dd2afcfdb 100644
--- a/chrome/test/base/testing_pref_service.cc
+++ b/chrome/test/base/testing_pref_service.cc
@@ -8,7 +8,8 @@
 #include "chrome/browser/prefs/browser_prefs.h"
 #include "chrome/browser/prefs/command_line_pref_store.h"
 #include "chrome/browser/prefs/default_pref_store.h"
-#include "chrome/browser/prefs/pref_notifier.h"
+#include "chrome/browser/prefs/pref_model_associator.h"
+#include "chrome/browser/prefs/pref_notifier_impl.h"
 #include "chrome/browser/prefs/pref_value_store.h"
 #include "chrome/browser/prefs/testing_pref_store.h"
 #include "chrome/test/base/testing_browser_process.h"
@@ -18,15 +19,18 @@ TestingPrefServiceBase::TestingPrefServiceBase(
     TestingPrefStore* managed_platform_prefs,
     TestingPrefStore* user_prefs,
     TestingPrefStore* recommended_platform_prefs)
-    : PrefService(managed_platform_prefs,
-                  NULL,
-                  NULL,
-                  NULL,
-                  user_prefs,
-                  recommended_platform_prefs,
-                  NULL,
-                  new DefaultPrefStore(),
-                  false),
+    : PrefService(
+        new PrefValueStore(managed_platform_prefs,
+                           NULL,
+                           NULL,
+                           NULL,
+                           user_prefs,
+                           recommended_platform_prefs,
+                           NULL,
+                           new DefaultPrefStore(),
+                           new PrefModelAssociator(),
+                           new PrefNotifierImpl()),
+        false),
       managed_platform_prefs_(managed_platform_prefs),
       user_prefs_(user_prefs),
       recommended_platform_prefs_(recommended_platform_prefs) {